Driving and extracting piles, posts, and the like.



A. GIBB, T. G. MENZIES R. GHALMERS. DRIVING AND BXTRAGTING PILES, POSTS, AND THE LIKE.

APPLICATION FILED AUG. 14, 1912.

Patented July 7, 1914.

2 SEEBTS-SHEET 1.

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l fnl THE NDRRIS PETERS CO.. PHOTO-LITHO., WASHINGTON, D. C.`

A. GIBB, T. G. MENZIES n R. GHALMBRS. DRIVING AND BXTRAGTING PILES, POSTS, AND THB LIKE.

APPLIOATION FILED AUG.14. 1912.

Patented July 7, 1914.

2 SHEETS-'SHEET 2.

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THE NOVRRIS PETERS CO4. FHOTOJJPHD., WASHINGTON. D. C

ALEXANDER GIIBB, 0F ST. MARTINS opinion.

CIEATG, NORTH QUEENSFEBR-Y, AND ROBERT CHALME-RS, Ol? RHUFA'DA, NEW- PORT, SCOTLAND.

DRIVING' AND EXTBACTING- PILES, POSTS, `ND LiKE.

incassa.

Specification of Letters Patent.

Application tiled August 14,1912. Serial No. 715,069.

To all whom it may concern.'

Be it known that we, ALEXANDER Gr, THOMAS GRAHAM Miixzms, and vftonnr CHALMERS, subjects of the King vof Great Britain, and residing, respectively, at St. Martins Abbey, Perthshire, Ferry Craig, North Queensferry, Fifeshire, N. B., and Rhufaada, Newport, Fifeshire, N. B., Scotland, have invented new and useful improvements in and Relating to the Driving and Extracting of Piles, Posts, and the like, of which the following is a specification.

Our invention has reference to the driving and extracting of piles posts and the Alike and relates more particularly to improvements in the apparatus described in the specification forming part of our Letters Patent of the United States of America numbered 1014295 patented January 12th 1912, wherein apparatus is described in which a power driven hammer is employed to operate on an anvil carried by the pile or the .likewith or without supporting means for the hammer independently of the pile for the purpose of extracting or assisting in the extraction of a pile or the like from the position in which it is fixed.

Now the object of the present invention is to provide meanswhereby piles or the like may be both driven and extracted by one and the same apparatus.

W ith this end in view our invention in its broadest aspect contemplates a construction wherein apower driven device is caused to operate in such a manner as t-o either drive or extract piles or the like at will.

More specifically stated the invention consists in so arranging a power driven hammer 'upon a pile or the like that it may either be reversed to deliver blows in opposite directions at will or may be caused to deliver blows in opposite directions at will without changing its relative position with respect to the pile.

In order that our invention may be readily understood and carried into effect by those skilled in the art to which it appertains we will now proceed to describe the same in detailv for which purpose reference should be had to theaccompanying which Figure 1 represents more or less diagrammatically a reversible deviCQ embodying the slightly modified which the cushioning springs shown iniliigs.

head 4 is actuated in'order that an external drawings in present inventionand illustrating its position for extracting a pile or the like. Fig. 2 is a view of the same device in position for driving a pile. Figs. 3 and '4 illustrate a forni of theinven'tion in 1 and 2 and hereinafter more particularly referred to are replaced by cushioning cylinders. Figs. 5 and 6 show a device similar to that shown in Figs. y3 and 4 but in which cushioning means are entirely dispensed with. Figs. of a. device whichv by suitable distribution of the motive iiuid may be employed either for driving or extracting piles or the like pref?- erably without changing its relative position wit-lirespect to the pile. Figs. 9 and 1G' illustrate elevations taken at right an-` gies to oneanother of al slightly modified form of apparatus hereinafter more particularly referred to. ,y Y Y Referring now to Figs. 1 and 2 to the pile or post 1 is secured appropriate attach- Patented July 7, 1914.

f and 8 are diagrammatic views' ments 2 for a striking plate or anvil 3 l against which-when the device is employed for extracting 'a pilethe blows from the hammer head 4 are delivered. rllhe hammer by fluid pressure operat-l ing on the piston 5 working in the cylinder 6 all as will be well understood. The cylinder -6 is provided with bearings 7` adapted to receive trunnionsS or other reversible attachments carried by the cheek pieces 9 slidably mounted upon the attachments 2. ln order that the hammer head 4 may operate through its normal effective stroke distance pieces 10 which may be adjustable as to length are` secured to the gland 11 or'thecylinder 6. "The iiuid pressure hammer as a whole is supported by the stirrup 12 which is free with respect to the anvil 3 and to which a chain or the like 13 may be attached pull may be exerted thereon when necessary for example. Supporting and cushioning springs 14 are preferably interposed between the bottom of the cylinder G and the head `of the pile 1 and also between the anvil *3 y 12. rlhe functions of the as by a crane f stated with the partsin the position llllstiated in Fig. 1 the device is adapted for n withdrawing` a pile or post. In order to vutilize the saine device for driving a pile it isl only necessary to reverse the hammer bodily so as to cause thev blows to be delivered upon the head of the pile instead of `upon the anvil 3 and this is effected in accordance with our present invention by turnl ing the hammer bodily about the trunnions 8 or 'other reversible attachments which may meansof the cushioning cylinder 15 and i piston 1.6. The'cushioning cylinder 15 is ar- `ranged to havethe motive fluid admitted to it. so that together with its ,pistony 1G it performs similar functions to the spring 14 in Figs. 1 and 2. `An apparatus constructed lin place of the spring 14. Similarly the` f Fig. 7 the it-s lower end or the anvil 20 may be formed;

as indicated in Figs. 1 and. 2 may be; provided wit-h a similar cushioning cylinder cushioning cylinder and piston in Figs. 3

and l4 may be replaced by springs. The operation and reversing of the device as indicated( in Figs. 3 and 4 as a whole is effected e in a manner similar to that described with reference to Figs. 1 and 2.y

springs 14 or the cylinder 15 and piston 16) are entirely dispensed with and'this form` of the device lmay beemployed with or without external pull when-used asan extractor.

In Figs. 7 and 8 we have shown two forms i of hammerwherein-the direction in which the blows are delivered'is determined by suitable distribution of the motive Huid. In

18 works isv the head of the pile 1 and is provided internally at its upper end with a'. striking surface 19 anda preferably loose anvil `20v at ,similar to the striking surface 19 tha-tis to .say vintegral with thecylinder 17 The piston 18 is caused to` reciprocate within the cylinder' 17 by the alternate admission .and exhaust of motive fluid `to and from-the `cylinder spaces 21 and 22 respectively.

When the device is used for extracting the distribution of motive fluid is so arranged that the piston 18 will strike'the anvil face `19 at the vend of the upward stroke but on the return stroke it will come to rest before reaching the anvil l20. For driving the distribution of the mot-ive iiuid is so arranged that the lower anvil 2O is struck by the piston 18 at the end of its downward stroke `butonits upward vstroke it is brought to rest and reversed without striking the anvil cylinder 17 in which the piston` supported directly upon` face 19. In-Fig. 8 the piston 18 is stationary upon the rod 28 while the cylinder 17 reciprocates in guides formed upon the attachment 2 or the piston rod- 23. According as the working iiuid is distributed in the cylinder spaces 21 and 22 the cylinder 17 will vbe caused tol strike either the head of the pile 1 or the anvil 3. A stirrup 12 may if desired be employed with 'either of these forms of the invention to exert an external pull when extracting.y

In the construction shown in Figs-9 and 10 the piston 18'piston rod 23 and' att-achments y2 are formed in one piece and the cylinder 17 whichinay be guided in its reciprocation on the piston rod 28 or mounted in independent guides formsy the ram. Seated looselyfon the pile 1 is an anvil 24 adapted whenthe device is employed for driving` l to receive the blows of the ram 0r cylinder 17. Then the apparatus is used for lextracting piles the distribution of the motive fluid is so determined that the cylinder end 17 will strike the under surface 18 of the piston 18y in a manner similar to that described with reference to Fig. 8 and when ,l

employed for driving the' cylinder end 17 will strike the top of the anvil 24.

'Although we have in the drawings forin-v ing parts of this 'specification illustrated our improved device as applied 'to the'driving s. m y andextracting of wood piles or posts itv is Figs. n 5, and 6, illustrate a construction g wherein the cushioning devices (as the ofcourse to be understood that theinvention is equally applicable to the driving and extract-ing of sheet metal piling and-the like while instead of employing one hammer 'a plurality of hammers may be so mounted as to operate simultaneously upon a pile.

We claim: i. s I 1. In apparatus for driving and Vextracting piles and the like, a vibrating hammer,

means for attaching' same to the pile, striking surfaces for said 'hammerv7 and means whereby said hammer may loe reversed and operated to deliver blows upon either of saidy striking as described. p

2. In apparatus for driving and extracting piles and the like' an anvil and means for attaching same to the pile7 a vibrating surfaces at will substantially hammer'slidably mountedupon said anvilattaching means andmeans whereby said hammer may be reversed and operated -to deliver blows in the proper direction substantially asdescribed. y* y 3. In apparatus for driving and extracting piles and the like an anvil and means for attaching sameto the pile, a vibrating hammer trunnions carried thereby cheek pieces slidably mounted uponA said Ianvilattaching means. and in whichV said trunnions' are adapted to engage and means whereby said hammer may be operated to deliver blows, in 'the roper direction .sub- 'stantally as described? means for the hammer substantially as de scribed.

ALEXANDER GIBB. THOMAS GRAHAM MENZIES. ltUBERT CHALMERS.

Witnesses: v

RONALD W. CURRiE, JAS. PENMAN.

4. In apparatus for driving and extracting piles and the like an anvil and means for attaching' same to the pile, a vibrating hainmer trunnions carried thereby cheek pieces slidably mounted upon said anvil-attaching mea-ns and in Which said trunnions are adapted to engage and means whereby said hammer may be operated to deliver blows in the proper direction and ycushioning Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents Washington, D. G. 

